Solar Photovoltaic Systems Quiz

The primary function of a solar photovoltaic (PV) system is to:

• Convert sunlight into heat energy

• Convert sunlight into electricity

• Store solar energy in chemical form

• Reflect sunlight to reduce building temperature

Answer explanation

The primary function of a solar photovoltaic (PV) system is to convert sunlight into electricity, making it a key technology for harnessing solar energy for power generation.

Solar photovoltaic modules produce which type of electrical current?

• Alternating current (AC)

• Direct current (DC)

• Both AC and DC simultaneously

• Variable current dependent on weather

Answer explanation

Solar photovoltaic modules convert sunlight into electricity, producing direct current (DC). This is the correct answer, as they do not generate alternating current (AC) or variable current based on weather.

Which component in a solar PV system is responsible for converting DC to AC?

• Solar module

• Inverter

• Consumer unit

• Generation meter

Answer explanation

The inverter is the component in a solar PV system that converts the direct current (DC) generated by the solar modules into alternating current (AC), which is used by most household appliances.

A group of solar cells is typically known as a:

• Solar array

• Solar module (or panel)

• Photovoltaic cluster

• Cell bank

Answer explanation

A group of solar cells is commonly referred to as a 'solar module' or 'panel'. This term accurately describes the assembled unit that converts sunlight into electricity, distinguishing it from other terms like 'solar array'.

Solar photovoltaic systems are classified as:

• Zero carbon technology

• High carbon emitting systems

• Fossil fuel dependent

• Non-renewable energy sources

Answer explanation

Solar photovoltaic systems convert sunlight into electricity without emitting carbon dioxide during operation, classifying them as zero carbon technology. This makes them a clean and sustainable energy source.

An “on‐grid” solar PV system is characterized by its ability to:

• Operate without any connection to the public grid

• Store all generated energy in batteries

• Export surplus electricity to the distribution grid

• Function only during daylight hours

Answer explanation

An 'on-grid' solar PV system is designed to export surplus electricity back to the distribution grid, allowing users to benefit from net metering and reduce their energy costs.

An “off‐grid” solar PV system primarily relies on:

• Direct export to the electricity grid

• Battery banks to store energy

• Fuel backup generators

• Grid interconnection for storage

Answer explanation

An off-grid solar PV system primarily relies on battery banks to store energy, as it operates independently from the electricity grid and needs a way to store excess energy for use when sunlight is not available.

The role of a generation meter in a solar PV installation is to:

• Measure the intensity of sunlight

• Record the amount of solar-generated electricity exported

• Convert DC electricity to AC electricity

• Monitor battery charge levels

Answer explanation

The generation meter's primary function is to record the amount of solar-generated electricity exported to the grid, making it essential for monitoring energy production and usage.

Roof-mounted solar PV modules can be installed using:

• A rail system on the roof surface

• Ground-mounted frameworks only

• Subterranean installations

• Free-standing towers only

Answer explanation

Roof-mounted solar PV modules are typically installed using a rail system on the roof surface, which provides a secure and efficient way to mount the panels. Other options like ground-mounted frameworks or towers are not for roof installations.

Why is it necessary to convert DC electricity to AC in most solar PV installations?

• DC is unsafe for household use

• Household appliances and the grid operate on AC electricity

• DC cannot be generated by solar cells

• AC conversion increases overall energy production

Answer explanation

It is necessary to convert DC to AC because household appliances and the electrical grid operate on AC electricity. This conversion allows solar energy to be used effectively in homes and fed into the grid.